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Pleomorphic liposarcoma: clinicopathologic analysis of 57 cases
Jason L Hornick1, Marcus W Bosenberg, Thomas Mentzel
1Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, 75 Francis Street, Boston, MA 02115, USA.
The American Journal of Surgical Pathology
|September 17, 2004
Summary
Pleomorphic liposarcoma is a rare cancer characterized by specific cell features and often found in limbs. Prognosis is influenced by age, tumor size, and location, with surgery and radiotherapy improving outcomes.
Area of Science:
- Oncology
- Surgical Pathology
- Soft Tissue Sarcomas
Background:
- Pleomorphic liposarcoma (PLPS) is an uncommon subtype of liposarcoma with distinct pathological features.
- Recent characterization has improved understanding of its clinical presentation and behavior.
Purpose of the Study:
- To present a series of 57 pleomorphic liposarcoma cases.
- To analyze clinical characteristics, histopathological subtypes, immunohistochemical findings, and prognostic factors.
Main Methods:
- Retrospective review of 57 pleomorphic liposarcoma cases.
- Analysis of patient demographics, tumor location, size, and depth.
- Histopathological subtyping and immunohistochemical analysis (SMA, S-100, keratin, desmin).
- Evaluation of follow-up data including recurrence, metastasis, and survival rates.
Main Results:
- Most common in the lower limb (47%), typically deep-seated (39%).
- Three main histological categories identified: spindle cell (60%), epithelioid (28%), and myxofibroma-like (12%).
- Prognostic factors for adverse outcomes include age ≥60, central location, larger tumor size, and higher mitotic rate.
- Wide local excision/amputation and postoperative radiotherapy were protective against local recurrence.
Conclusions:
- Pleomorphic liposarcoma exhibits diverse morphology and immunohistochemical profiles.
- Age, tumor size, location, and mitotic rate are key predictors of patient outcome.
- Multimodal treatment including surgery and radiotherapy improves local control.